vpopmail is a collection of programs and a library to automate the creation and maintenance of virtual domain email configurations for qmail installations using either a single UID/GID or any valid UID/GID in /etc/passwd with a home directory. Features are provided in the library for other applications which need to maintain virtual domain email accounts.

GPL software package, to provide an easy way to manage virtual e-mail domains and non /etc/passwd e-mail accounts on your qmail or Postfix mail servers. Originally developed by http://www.inter7.com Inter7 it has become a large open source project with a large community supporting it.